2011 Fiscal Year Final Research Report
Material mechanics study on rare-earth based high-Tc superconductors aiming high-field magnet application
| Project/Area Number |
21686064
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| Research Category |
Grant-in-Aid for Young Scientists (A)
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| Allocation Type | Single-year Grants |
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| Research Field |
Composite materials/Physical properties
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| Research Institution | National Institute for Materials Science (2010-2011)
Tohoku University (2009) |
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Principal Investigator |
NISHIJIMA Gen 独立行政法人物質・材料研究機構, 超伝導線材ユニット, 主任研究員 (30333884)
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| Project Period (FY) |
2009 – 2011
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| Keywords | 複合変形応力 |
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| Research Abstract |
To develop higher field superconducting magnets, application of high-T_c superconductor is necessary. In particular, rare-earth based superconductors, which are usually deposited on a high-strength metal substrate, are important candidates for high-field magnet material. In this work, an apparatus, which applies tensile/compressive strain to high-T_c superconductor, was developed. The apparatus was designed based on a four-point bending test. The author investigated strain dependence of critical current at various temperatures and magnetic fields for commercially available superconductor using the apparatus with a variable temperature insert and a cryogen-free superconducting magnet. Temperature and magnetic field are important parameter to determine the strain dependence of critical current for the rare-earth based high-Tc superconductor. A scaling law is needed to develop application devices.
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